Compound Gaussian multiple access channels with noisy feedback

Ashutosh Sabharwal; Debashis Dash; Suhas Diggavi

doi:10.1109/ALLERTON.2008.4797651

Compound Gaussian multiple access channels with noisy feedback

Ashutosh Sabharwal, Debashis Dash, Suhas Diggavi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

In this paper, we study the role of noisy feedback in compound Gaussian multiple access channels, where both the set of active users and their respective channels are unknown a priori. The system is modeled as a special form of two-way network, where transmitters and receivers can interact with each other to improve the overall communication efficiency, but the information flow is not bi-directional. We first characterize the compound channel capacity when there is no feedback in the system, which turns out to be simply an intersection of several capacity regions. Next, we analyze a polling, channel estimation and feedback protocol, which achieves a rate region to within log (Κ) bits/use of a Κ-user system with perfect feedback.

Original language	English (US)
Title of host publication	46th Annual Allerton Conference on Communication, Control, and Computing
Pages	887-894
Number of pages	8
DOIs	https://doi.org/10.1109/ALLERTON.2008.4797651
State	Published - 2008
Event	46th Annual Allerton Conference on Communication, Control, and Computing - Monticello, IL, United States Duration: Sep 24 2008 → Sep 26 2008

Publication series

Name	46th Annual Allerton Conference on Communication, Control, and Computing

Conference

Conference	46th Annual Allerton Conference on Communication, Control, and Computing
Country/Territory	United States
City	Monticello, IL
Period	9/24/08 → 9/26/08

ASJC Scopus subject areas

Computer Networks and Communications
Software
Control and Systems Engineering
Communication

Access to Document

10.1109/ALLERTON.2008.4797651

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Compound Gaussian multiple access channels with noisy feedback. / Sabharwal, Ashutosh; Dash, Debashis; Diggavi, Suhas.
46th Annual Allerton Conference on Communication, Control, and Computing. 2008. p. 887-894 4797651 (46th Annual Allerton Conference on Communication, Control, and Computing).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sabharwal, A, Dash, D & Diggavi, S 2008, Compound Gaussian multiple access channels with noisy feedback. in 46th Annual Allerton Conference on Communication, Control, and Computing., 4797651, 46th Annual Allerton Conference on Communication, Control, and Computing, pp. 887-894, 46th Annual Allerton Conference on Communication, Control, and Computing, Monticello, IL, United States, 9/24/08. https://doi.org/10.1109/ALLERTON.2008.4797651

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AB - In this paper, we study the role of noisy feedback in compound Gaussian multiple access channels, where both the set of active users and their respective channels are unknown a priori. The system is modeled as a special form of two-way network, where transmitters and receivers can interact with each other to improve the overall communication efficiency, but the information flow is not bi-directional. We first characterize the compound channel capacity when there is no feedback in the system, which turns out to be simply an intersection of several capacity regions. Next, we analyze a polling, channel estimation and feedback protocol, which achieves a rate region to within log (Κ) bits/use of a Κ-user system with perfect feedback.

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Compound Gaussian multiple access channels with noisy feedback

Abstract

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Conference

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